Air impeller or propeller



Sept. 4, 1923. 1,467.22?

G. M. CAPELL AIR IMPELLER OR PROPELLER Filed Sept. 2. 1921 ATTY.

Patented Sept. 4, 1923.

GEORGE MIARIE CAPELL, DECEASED, LATE 0F PASSENHAM, NEAR STONY STRATFORD,ENGLAND; BY ROBERT ALFRED BLAKE, TRUSTEE AND LEGAL REPRESENTATIVE.

AIR IMPELLER OR PROPELLER.

Application filed September 2, 1921. Serial No. 498,096.

To all whom it may concern:

Be it known that GEORGE MARIE CAPELL, deceased, subject of the King ofGreat Britain, late residing at Passenham, near Stony Stratford, in thecounty of Bucks, England, has invented new and useful Improvements inand Relating to Air Impellers or Propellers, of which the following is aspecification,

This invention relates to air impellers or propellers and consists ofcertain improvements hereinafter expressed, in the type of impeller orpropeller adaptable to and capable of:-(a) creating a current of airwhen caused to rotate in stationary mountings, (b) advancing through theair when mounted and caused to rotate as the propeller of an aeroplaneand (0) being The invention consists in providing a conical containingring around the blades and in some instances providin in such form ofimpeller a lip upon one-e go of the blades.

Figure 1 is an elevation of an impeller or propeller constructed withthe improved containing ring. Figure 2 shows a portlon of an impellerconstructed with the improved containing ring and improved blades.Figure 3 is a section on tortuous line M--M Figure 1 lookin from rightto left and showing a method of mounting. Figure d is a section at YZ Fire 1, and Figure 5 is a section at W- Figure 2, showing the improvedblade. 7

As previously proposed the blades may be formed by cutting suitableslots in a disc C and bending the parts A of the blades obliquely out ofthe plane of thedisc According to the present invention the outerextremities of the blades A C are suitably attached' to the interior ofa conical containing ring E, converging in the direction of the portionsA. This ring E may have a cylindrical extension H beyond the portions Aof the blades. The disc C is attached at its centre to a flanged sleeveF which is fixed and carried upon a shaft G. The sleeve may be containedwithin a coneshaped member P thus forming a cone shaped boss whichguides the air to the blades.

The shaft G may be j ournalled in bearings as shown at K.

A modified blade is formed by bending the edges of the portions of thedisc C remote from the portions A obliquely out of the plane of the discto form lips as shown at L in Figures 2 and 5 this bend being in areverse direction to that of the portions A. What is claimed is 1. In anair impeller, blades each consisting of a portion of a discperpendicular to the axis of said impeller and a ortion oblique to saidaxis, and on the lea ing side of said perpendicular portion, and aconical ring converging in the direction of said oblique portionssecured to the outer extremities of said blades.

2. In an air impeller, blades each consisting of a portion of a discperpendicular to the axis of said impeller and a portion oblique to saidaxis and on the leadin side of said perpendicular portion, a conica ringconverging in the direction of said oblique portions secured to theouter extremities of said blades and a cylindrical extension of saidring.

3. In an air impeller, blades each consisting of a portion of a discperpendicular to the axis of said impeller, a portion oblique to saidaxis and on the leading side of said perpendicular portion, and anoblique lip remote from and oppositely directed to said oblique portion.

4. In an air impeller, blades each consisting of a portion of a discperpendicular to the axis of said impeller, a portion oblique to saidaxis and on the leading side of said perpendicular portion, an obliquelipremote from and oppositely directed to said oblique portion, and aconical ring converging in the direction of said oblique portionssecured to the outer extremities of said blades.

meme? 5. In an air impeller, blades each consisting of a portion of adisc perpendicular to the axis of said impeller, a portion oblique tosaid axis and on the leading side of said perpendicular portion, and anoblique lip remote from and oppositely directed to said oblique portion,a conical ring converging in the direction of said oblique portionssecured to the outer extremities of said blades and a cylindricalextension of said ring. 10

In testimony whereof I have signed my name to this specification.

ROBERT ALFRED BLAKE.

Trustee and legal representative of George Marie Capell, deceased.

